Version v4.21.0

Sub-task

• [CHT-1087] - Improve log messages to make debugging process easier
• [CHT-1088] - Refactor Setup and TearDown
• [CHT-1092] - Refactor AuxVarsBool & AuxVarsMCHandle

Maintenance

• [CHT-1015] - Adapt to new return type for MegaApi::getNumNodes()

Bug

• [CHT-1075] - Fix call destruction management at SfuClient
• [CHT-1077] - MegaChatApiTest.WaitingRooms SEGFAULT
• [CHT-1085] - Fix waiting room upon WR_ALLOW

Feature

• [CHT-945] - Implement support for OP_REJECT command

Target Apps

• Android 11.3
• iOS 13.3